Nighttime construction activities will take place on Wednesday, December 2, and into the early morning of Thursday, December 3, causing lane closures along the Dulles International Airport Access Highway, Autopilot Drive and Centreville Road.

Lane closures on the eastbound DIAAH as it leaves the airport will begin at 7 p.m. From 10 p.m. to 5 a.m., traffic will be diverted to eastbound Aviation Drive, and then to the new ramp at the north end of Windsock Drive to access the eastbound DIAAH and the Dulles Toll Road.

Between 9 p.m. to 5 a.m., the northbound and southbound lanes of Autopilot Drive just north of the Advantage driveway and just south of the Budget driveway will be closed to allow work to continue on the Dulles Corridor Metrorail Project Aerial Guideway. Detour signage, flaggers and police will be in place to guide local and through traffic to their destination.

Crews will continue the bridge work at night over Centreville Road at the intersection of the entrance and exit ramps for the eastbound and westbound Dulles Toll Road. Drivers may experience minor delays due to lane closures in the northbound and southbound lanes between 10 p.m. and 5 a.m.

Please stay alert, obey all signage and drive carefully. All work is weather dependent and subject to change.

Dulles International Airport Access Highway (DIAAH) East

When: Wednesday, December 2 – Thursday, December 3, 7 p.m. to 5 a.m.

What: Two left lanes closed at 7 p.m. From 10 p.m. to 5 a.m., full closure of eastbound lanes with traffic be diverted to

eastbound Aviation Drive then to the new ramp to the eastbound DIAAH

Where: From mile marker 0.1 to 0.4 (from Saarinen Circle to 1/10 mile before the Rudder Road overpass). Police will be on site for motorist safety.

Where: Northbound and southbound lanes of Autopilot Drive closed from just north of the Advantage driveway to just south of the Budget; traffic will be diverted around the closure as appropriate. Police, flaggers and signage will be in place to direct traffic.